Freescale Semiconductor MPC8260 - Manual (Page 1042)

ATM AAL1 Circuit Emulation Service
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
31-26 Freescale Semiconductor
between transmit and receive connection tables of the same channel is the CRT (CAS routing table); see
Section 31.4.7.1, “CAS Routing Table.”
Each connection table entry resides in 32 bytes. The pointers to these connection tables reside in the
parameter RAM.
31.9.1 Receive Connection Table (RCT)
Figure 31-21 shows the format of an RCT entry.
NOTE
For an active channel, the CP uses a burst cycle to fetch the 32-byte RCT
and writes back only the first 24 bytes.
Table 31-5 describes RCT fields.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Offset + 0x00 — GBL BO — DTB BIB — SEGF ENDF — SYNC INTQ
Offset + 0x02 — CASM ABRF AAL
Offset + 0x04 RX Data Buffer Pointer (RXDBPTR)
Offset + 0x06
Offset + 0x08 Cell Time Stamp
Offset + 0x0A
Offset + 0x0C RBD_Offset
Offset + 0x0E Protocol Specific. Refer to Section 31.9.1.1, “AAL1 CES Protocol-Specific RCT .”
Offset + 0x10
Offset + 0x12
Offset + 0x14
Offset + 0x16
Offset + 0x18
Offset + 0x1A MRBLR
Offset + 0x1C — PMT RBD_BASE
Offset + 0x1E RBD_BASE CCASM CESM — PM
Figure 31-21. Receive Connection Table (RCT) Entry